• Code: C-5009
• Description: ADU drive serial input abnormality 2. The serial data is not received from the ADU drive board (ADUDB) with ID=7-10 within a specified period of time after ACK when the power switch (SW2) is ON.
• Causes: ADU drive board (ADUDB)

• Code: C-5013
• Description: ADU drive communication abnormality. The communication data with ID=8-10 is not received within a specified period of time after the initial communication is established.
• Causes: ADU drive board (ADUDB)

• Code: C-5101
• Description: An error of the EM signal is detected in succession for a specified period of time when a specified period of time elapses after the fusing motor (M4) turns ON.
• Causes: Fusing motor (M4) Printer control board (PRCB)

• Code: C-5301
• Description: The EM signal of the power supply cooling fan /1 (FM16) shows an abnormal condition when a specified period of time elapses after FM16 turns ON. This abnormal condition recurs when a specified period of time elapses after FM16 is turned OFF and then ON again.
• Causes: Power supply cooling fan /1 (FM16) DC power supply /1 (DCPS1)

• Code: C-5302
• Description: The EM signal shows an abnormal condition when a specified period of time elapses after the cooling fan /1 (FM1) turns ON. This abnormal condition recurs when a specified period of time elapses after FM1 is turned OFF and then ON again.
• Causes: Cooling fan /1 (FM1) Printer control board (PRCB)

• Code: C-5303
• Description: The EM signal of the power supply cooling fan /2 (FM15) shows an abnormal condition when a specified period of time elapses after FM15 turns ON. This abnormal condition recurs when a specified period of time elapses after FM16 is turned OFF and then ON again.
• Causes: Power supply cooling fan /2 (FM15) Printer control board (PRCB)

• Code: C-5304
• Description: The EM signal shows an abnormal condition when a specified period of time elapses after the IH cooling fan /1 (FM17) turns ON. This abnormal condition recurs when a specified period of time elapses after FM1 is turned OFF and then ON again.
• Causes: IH cooling fan /1 (FM17) Printer control board (PRCB)

• Code: C-5305
• Description: The EM signal shows an abnormal condition when a specified period of time elapses after the fusing cooling fan (FM18) turns ON. This abnormal condition recurs when a specified period of time elapses after FM18 is turned OFF and then ON again.
• Causes: Fusing cooling fan (FM18) ADU drive board (ADUDB)